. and by contributions to your pbs station from viewers like you. thank you. >> lehrer: the u.s. moved into what is planned as its final military phase in iraq today after ending its combat role. newshour correspondent kwame holman begins our coverage. >> reporter: cleaning up and packing-- that's what u.s. soldiers were doing on bases across iraq today. humvees rolled on to flatbed trucks and rows of equipment awaited transport home. last night, president obama marked the formal end of combat operations in iraq with a speech from the oval office. >> our combat mission is ending, but our commitment to iraq's future is not. this new approach reflects our long-term partnership with iraq , one based upon mutual interest and mutual respect. >> reporter: today, american military leaders marked the occasion with a change in command of the remaining 50,000 troops in iraq. vice president biden and defense secretary gates were among those presiding at the main u.s. military headquarters on the outskirts of baghdad. >> i pray that all those scarred by this war in iraq come to know the bond of lasting peac